JP2598627B2 - Nose hair cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nose hair cutter for cutting nose hair extending into a nasal cavity.

[0002]

2. Description of the Related Art Conventionally, a comb-shaped fixed blade formed in a cylindrical shape and having an axial blade groove, a movable blade rotating along the inner surface of the fixed blade, and the movable blade as an inner surface of the fixed blade. There is known a nose hair cutter provided with a spring member that elastically urges the nose hair (see Japanese Patent Publication No. 55-6361). The movable blade is formed by forming a shear blade at both ends of a spring member formed of a leaf spring bent in a substantially U-shape. In this method, when the movable blade is rotated, the movable blade slides on the inner surface of the fixed blade, and the nose hairs introduced from the blade groove of the fixed blade are cut off by the shearing edge of the fixed blade and the movable blade. ing.

[0003]

In such a nose hair cutter, the movable blade falls down in the direction opposite to the rotation direction due to the sliding resistance between the movable blade and the fixed blade that slides and rotates on the inner surface of the fixed blade. The state of close contact between the blade edge of the fixed blade and the movable blade becomes poor, resulting in poor sharpness. Further, since the movable blade is formed by forming a shearing blade at both ends of a substantially U-shaped spring member, and the movable blade and the spring member are integrally formed, the spring member is formed as the movable blade falls. , A force causing twisting along the rotation direction is applied, and the spring member is deformed, so that an appropriate contact pressure between the fixed blade and the movable blade may not be obtained.

Accordingly, an object of the present invention is to provide a nose hair cutter capable of preventing the movable blade from falling in the rotation direction, maintaining a good contact state between the fixed blade and the blade edge of the movable blade, and obtaining good sharpness. It is to provide. Another object of the present invention is to provide a nose hair cutter capable of maintaining an appropriate contact pressure between a fixed blade and a movable blade.

[0005]

According to a first aspect of the present invention, there is provided a nose hair cutter having a comb-shaped fixed blade formed in a cylindrical shape and having an axial groove, and a movable blade rotating along the inner surface of the fixed blade. The blade includes a spring member that elastically biases the movable blade toward the inner surface of the fixed blade, and a movable blade base to which the movable blade and the spring member are attached. The movable blade base and the movable blade are provided with stoppers for preventing the movable blade from falling in the rotation direction.

[0006] The nose hair cutter according to the second aspect is the first aspect.
In the nose hair cutter described above, the stopper includes an engaging piece protruding from the tip of the movable blade base and an engaged piece provided on the movable blade and engaged with the engaging piece. A nose hair cutter according to a third aspect of the present invention is the nose hair cutter according to the first aspect, wherein the movable blade is configured by providing cutting edges at both ends of a U-shaped spring member.

[0007]

According to the structure of the present invention, since the stopper can prevent the movable blade from falling in the rotation direction, a good close contact between the fixed blade and the blade edge of the movable blade can be obtained and the sharpness can be improved. Further, in the case where the movable blade is formed by providing cutting edges at both ends of a U-shaped spring member and the movable blade and the spring member are integrally formed, a force that causes the spring member to twist is applied. Therefore, deformation of the spring member can be prevented, and an appropriate contact pressure between the fixed blade and the movable blade can be obtained.

[0008]

An embodiment of the present invention will be described with reference to FIGS. In this nose hair cutter, as shown in FIG.
The tip of the head case 2 is formed in a cylindrical comb 3 having an outer diameter that can be inserted into the nasal cavity. 4 is the head case 2
Cap. The comb 3 is formed of an elastic synthetic resin having good workability.

As shown in FIG. 1, the head case 2 is detachably fitted to the cylindrical portion 1a of the main body housing 1. A motor 5 and a battery (not shown) are housed in the main body housing 1. The fixed blade 8 is fixed to the inner periphery of the comb 3, and the movable blade 7 that rotates along the inner surface of the fixed blade 8 is attached to the movable blade base 6. The movable blade base 6 is removably fitted to a joint 9 press-fitted to the drive shaft 5a of the motor 5, and the rotation is transmitted by the D-shaped cross-sectional shape of the fitted portion.

As shown in FIG. 5, the fixed blade 8 has a cylindrical shape, and has a plurality of blade grooves 11 along the axial direction, and has a comb-like shape. As shown in FIGS. 3 and 4, the comb teeth 20 of the comb 3 cover each comb tooth of the fixed blade 8, and the edge 14 of the blade groove 11 of the fixed blade 8 is 20
It slightly protrudes into the groove width of the groove between them. In FIG. 3, a
Is the comb groove width, and b is the width of the blade groove 11 of the fixed blade 8.

As shown in FIG. 6, the movable blade 7 is provided with cutting blades 12 at both ends of a U-shaped arm 15. The arm portion 15 is a spring member that can be spread freely.
The contact pressure between the cutting blade 12 and the fixed blade 8 is obtained by elastically biasing the cutting blade 12 toward the inner surface of the fixed blade 8 by the elasticity. The movable blade 7 is mounted on the movable blade base 6 by fitting a hole 15 a provided at the base end of the arm 15 to the shaft 6 a of the movable blade base 6 (FIG. 1), and is provided near the distal end of the arm 15. The piece 16 is engaged with the bifurcated tip engaging piece 6b of the shaft portion 6a so that rotation can be transmitted. In this case, the tip engaging piece 6b of the movable blade base 6 as the engaging piece and the driving piece 16 of the movable blade 7 as the engaged piece serve as stoppers for preventing the movable blade 7 from falling in the direction opposite to the rotation direction. Function.

A stopper piece 17 is further extended from the driving piece 16 and is engaged with the inside of the tip engaging piece 6b to regulate the opening of the arm portion 15 as a spring member in the direction toward the inner surface of the fixed blade. ing. The operation of the above configuration will be described. When the comb 3 is inserted into the nasal cavity, the nose hair is introduced into the blade groove 11 of the fixed blade 8 from the groove of the comb 3 and cut by being sandwiched between the movable blade 7 and the fixed blade 8 rotating along the inner surface of the fixed blade 8. You. Since the edge portion 14 serving as the cutting edge of the blade groove 11 of the fixed blade 8 slightly projects into the groove portion of the comb 3, the nose hair surely hits and good cutting properties are obtained.

Since the outer periphery of the fixed blade 8 is covered with the comb 3, it does not touch the mucous membrane of the nasal cavity, and only the comb 3 touches. Since the comb 3 is formed of a synthetic resin, a smooth feel to the mucous membrane can be obtained and the mucous membrane is not damaged. Although the edge 14 of the fixed blade 8 protrudes into the groove of the comb 3, the amount of protrusion is small, so that the fixed blade 8 does not touch the mucous membrane.

Since the head case 2 is detachably fitted to the cylindrical portion 1a of the main body housing 1, the fixed blade 8 and the movable blade 7 can be cleaned by extracting the head case 2. In this case, the movable blade 7 is configured to apply a contact pressure to the fixed blade 8 as it is opened. However, since the movable blade 7 is engaged with the inner surface of the tip engaging piece 6b of the movable blade base 6 by the stopper piece 17, it is necessary. As described above, the movable blade 7 does not open. Therefore, attachment and detachment of the head unit case 2 is easy, and cleaning is easy.

Further, since the driving piece 16 and the tip engaging piece 6b are engaged in the rotating direction of the movable blade 7, the movable blade 7 is moved by the sliding resistance between the fixed blade 8 and the movable blade 7. If it is attempted to fall to the side opposite to the rotation direction, the driving piece 16 and the tip engagement piece 6b function as stoppers, and the movable blade 7 can be prevented from falling. Therefore, a good state of contact between the blade edge of the fixed blade 8 and the movable blade 7 can be obtained, and the sharpness can be improved. The movable blade 7 is U
When the movable blade 7 and the arm 15 are formed integrally with each other, the arm 15 is twisted. Since no force is applied, deformation of the arm 15 can be prevented, and an appropriate contact pressure between the fixed blade 8 and the movable blade 7 can be obtained.

[0016]

According to the nose hair cutter of the present invention, the stopper can prevent the movable blade from falling in the rotational direction, so that the fixed blade and the movable blade can have a good close contact with the edge of the blade, and the sharpness can be improved. can do. Further, in the case where the movable blade is formed by providing cutting edges at both ends of a U-shaped spring member and the movable blade and the spring member are integrally formed, a force that causes the spring member to twist is applied. Therefore, deformation of the spring member can be prevented, and an appropriate contact pressure between the fixed blade and the movable blade can be obtained.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a nose hair cutter according to an embodiment of the present invention.

FIG. 2 is a perspective view of the nose hair cutter.

FIG. 3 is a partial plan view of the nose hair cutter.

FIG. 4 is an enlarged front view of a comb portion of the nose hair cutter.

FIGS. 5A and 5B are a plan view and a front view, respectively, of a fixed blade of a nose hair cutter.

FIGS. 6A to 6C are a plan view, a cutaway side view, and a front view of a movable blade of the nose hair cutter, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body housing 2 Head part case 3 Comb 6 Movable blade base 6b Tip engagement piece 7 Movable blade 8 Fixed blade 11 Blade groove 12 Cutting blade 15 Arm part 16 Driving piece 17 Stopper piece 20 Comb tooth part

Claims (3)

(57) [Claims] 1. A comb-shaped fixed blade formed in a cylindrical shape and having an axial blade groove, a movable blade rotating along the inner surface of the fixed blade, and the movable blade facing the inner surface of the fixed blade. A movable blade base to which the movable blade and the spring member are attached, and a stopper for preventing the movable blade and the movable blade from falling in the rotation direction of the movable blade. Nose hair cutter provided. 2. The nose hair according to claim 1, wherein the stopper comprises an engaging piece protruding from a tip of the movable blade base and an engaged piece provided on the movable blade and engaged with the engaging piece. cutter. 3. The nose hair cutter according to claim 1, wherein the movable blade comprises a U-shaped spring member provided with cutting edges at both ends.